General survey of polarization observables in deuteron electrodisintegration

Arenhövel, H.; Leidemann, Winfried; Tomusiak, E.L.

doi:10.1140/epja/i2004-10061-5

Cited by 58 publications

(83 citation statements)

References 73 publications

(171 reference statements)

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“…Effects of the nuclear binding of the neutron in the deuteron were corrected for using the model of Arenhö-vel et al [17]. This model has proven highly successful in describing electron scattering on the deuteron, so that a small relative error in the correction could be assumed.…”

Section: Introductionmentioning

confidence: 99%

Measurement of the electric form factor of the neutron at Q2 = 0.3-0.8 (GeV/ c) 2 ⋆

et al. 2005

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Abstract. The electric form factor of the neutron, GE,n, has been measured at the Mainz Microtron by recoil polarimetry in the quasielastic D( e, e ′ n)p reaction. Three data points have been extracted at squared four-momentum transfers Q 2 = 0.3, 0.6 and 0.8 (GeV/c) 2 . Corrections for nuclear binding effects have been applied. PACS. 13.40.Gp Electromagnetic form factors -14.20.Dh Protons and neutrons -13.88.+e Polarisation in interactions and scattering

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Section: Introductionmentioning

confidence: 99%

Measurement of the electric form factor of the neutron at Q2 = 0.3-0.8 (GeV/ c) 2 ⋆

et al. 2005

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“…(7). The existing data are at a relatively low Q 2 and were compared to a model formulated by Arenhövel et al [9,40]. This section will summarize the results of these experiments.…”

Section: Existing Data Overviewmentioning

confidence: 98%

“…Figure 2 shows that at momenta higher than 200 MeV/c, the vector asymmetry, A [25]. The curves are again from Arenhövel et al [9,40].…”

Section: T Dmentioning

confidence: 99%

“…The deuteron, as the simplest nuclear system, serves the dual role of an "effective free neutron target" [1][2][3][4][5][6][7][8] and as a testing ground for sophisticated models of nucleon-nucleon interactions and scattering mechanisms [9,10]. Electron scattering off the deuteron has been used as a means to extract information on its nuclear structure, including the D-wave (L = 2) contribution to the ground state wave function [11,12].…”

Section: Introductionmentioning

confidence: 99%

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Beam-target double-spin asymmetry in quasielastic electron scattering off the deuteron with CLAS

Mayer¹,

Kuhn²,

Adhikari³

et al. 2017

Phys. Rev. C

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Background: The deuteron plays a pivotal role in nuclear and hadronic physics, as both the simplest bound multi-nucleon system and as an "effective neutron target". Quasi-elastic electron scattering on the deuteron is a benchmark reaction to test our understanding of deuteron structure and the properties and interactions of the two nucleons bound in the deuteron.Purpose: The experimental data presented here can be used to test state-of-the-art models of the deuteron and the two-nucleon interaction in the final state after two-body breakup of the deuteron. Focusing on polarization degrees of freedom, we gain information on spin-momentum correlations in the deuteron ground state (due to the D-state admixture) and on the limits of the Impulse Approximation (IA) picture as it applies to measurements of spin-dependent observables like spin structure functions for bound nucleons. Information on this reaction can also be used to reduce systematic uncertainties on the determination of neutron form factors or deuteron polarization through quasi-elastic polarized electron scattering.Method: We measured the beam-target double spin asymmetry (A || ) for quasi-elastic electron scattering off the deuteron at several beam energies (1.6−1.7 GeV, 2.5 GeV, 4.2 GeV and 5.6−5.8 GeV), using the CEBAF Large Acceptance Spectrometer (CLAS) at the Thomas Jefferson National Accelerator Facility. The deuterons were polarized along (or opposite to) the beam direction. The double spin asymmetries were measured as a function of photon virtuality Q 2 (0.13−3.17 (GeV/c) 2 ), missing momentum (pm = 0.0 − 0.5 GeV/c), and the angle between the (inferred) "spectator" neutron and the momentum transfer direction (θnq). Results:The results are compared with a recent model that includes Final State Interactions (FSI) using a complete parameterization of nucleon-nucleon scattering, as well as a simplified model using the Plane Wave Impulse Approximation (PWIA). We find overall good agreement with both the PWIA and FSI expectations at low to medium missing momenta (pm ≤ 0.25 GeV/c), including the change of the asymmetry due to the contribution of the deuteron D-state at higher momenta. At the highest missing momenta, our data clearly agree better with the calculations including FSI. Conclusions:Final state interactions seem to play a lesser role for polarization observables in deuteron twobody electro-disintegration than for absolute cross sections. Our data, while limited in statistical power, indicate that PWIA models work reasonably well to understand the asymmetries at lower missing momenta. In turn, this information can be used to extract the product of beam and target polarization (P b Pt) from quasi-elastic electrondeuteron scattering, which is useful for measurements of spin observables in electron-neutron inelastic scattering. However, at the highest missing (neutron) momenta, FSI effects become important and must be accounted for.

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“…Compared to G M n , the electric neutron form factor G En is more difficult to measure. Various possibilities to measure G En have been discussed in [30]. It turned out that the cleanest determination is obtained in double polarization observables in deuteron electrodisintegration,…”

Section: The Deuteron As Effective Neutron Targetmentioning

confidence: 99%

Few-nucleon systems (theory)

Schwamb¹

Many Body Structure of Strongly Interacting Systems

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General survey of polarization observables in deuteron electrodisintegration

Cited by 58 publications

References 73 publications

Measurement of the electric form factor of the neutron at Q2 = 0.3-0.8 (GeV/ c) 2 ⋆

Measurement of the electric form factor of the neutron at Q2 = 0.3-0.8 (GeV/ c) 2 ⋆

Beam-target double-spin asymmetry in quasielastic electron scattering off the deuteron with CLAS

Few-nucleon systems (theory)

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